High-Throughput Screening of Metal-Organic Frameworks for CO2 Separation

A parallel high-throughput sorption methodology is described for screening CO2 and N-2 adsorption and diffusion selectivity in metal organic frameworks, before and after exposure to water vapor and acid gases. We illustrate this approach by simultaneously investigating 8 candidate Metal-Organic Framework (MOF) materials, of which the best material was found to have a CO2/N-2 membrane selectivity of 152 and a CO2 permeability of 60 barrer for Co-NIC. This approach provides a significant increase in efficiency of obtaining the separation properties of MOFs. While we describe here the identification of novel materials for CO2 capture, the methodology enables exploration of the performance and stability of novel porous materials for a wide range of applications.